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Coupling Between Adsorbate Vibrations and an Electronic Surface State
2000
Physical Review Letters
Preserved Fulltext
We report direct angle-resolved photoemission measurements of the coupling between the symmetric stretch vibrational mode of adsorbed hydrogen and a surface band on W(110). This coupling is manifested by the surface band being split into two branches at a binding energy comparable to the vibrational mode energy, as confirmed by observation of a dramatic hydrogen͞deuterium isotope effect. The electron-phonon coupling parameter l is found to be significantly larger than that for bulk W, and to be
doi:10.1103/physrevlett.84.2925
pmid:11018977
fatcat:lft7zlc6vbbnrkgtbag62cm5b4